Yinghai Lu wrote:> On Fri, Mar 21, 2008 at 6:08 AM, H. Peter Anvin <hpa@zytor.com> wrote:>> Ingo Molnar wrote:>> >>> > very nice patch! I always thought that this was the proper way to do>> > memtest - and we could in fact also do something like this after SMP>> > bringup, and hit the memory bus via multiple CPUs. [that will need a>> > different enumeration though than e820 maps]>> >>> > one structural observation: please make this unified functionality, so>> > that 32-bit kernels can make use of it too.>> >>>>> Indeed. Of course, it would also be nice if distros shipped>> bootloader-invoked prekernel test software, like memtest86+, by default.> > the current memtest86 is running in 32 bit mode, and only support 64G ram.> > I tried to expand that a bit, to support 1024g, but it only works on> some machine.> could be stack provide is not big enough?>